Avalanche Grade, Custom Made Hot Tub Cover 6" x 4"

Avalanche Grade Custom Made Hot Tub Cover (6" x 4" Taper)

Our Avalanche Grade custom made hot tub cover is the highest specification spa cover we offer, designed for maximum heat retention, durability, and long-term performance in the UK climate. Manufactured in the USA to exact measurements, this premium hot tub cover features a 6" to 4" taper, with thicker foam at the hinge to improve insulation and water runoff, reducing heat loss and energy costs.

Every Avalanche spa cover is built without compromise. From the internal foam core to the exterior marine-grade vinyl, each component is selected for strength, longevity, and weather resistance. This is our most popular and longest-lasting hot tub cover, trusted by thousands of customers across the UK who want a reliable, made-to-measure replacement that fits perfectly and performs year after year.

Premium USA-Made Spa Cover Features

• Marine Grade Vinyl – Heavy-duty outdoor vinyl with integrated UV and anti-mildew inhibitors to protect against fading, cracking, and moisture damage. Available in 12 colour options to suit your spa and garden.
• Double-Stitched Skirts & Handles – Reinforced stitching throughout to prevent tearing, with precision-cut skirts designed to trap heat while keeping debris out. Overlapped corners ensure a neat fit without bunching.
• Heavy-Duty YKK Zippers – Non-corrosive YKK7 nylon zips for smooth operation and long-term reliability, with discreet zipper pockets for protection and a clean finish.
• Steel Hinge Reinforcement – Non-corrosive steel C-channel support along both sides of the hinge for added strength in the area that takes the most stress.
• High-Strength Safety Straps – Durable locking straps engineered for harsh conditions, supplied with fixings and two keys for added security.
• Continuous Heat Seal – Fitted as standard along the hinge to prevent heat escaping from exposed hinge areas, maximising insulation efficiency.

How to Order Your Custom Spa Cover

Ordering your made-to-measure hot tub cover is straightforward. Simply select your preferred colour and place your order. Download and complete the editable PDF cover order form, then email it to [email protected]. Once received, we will process your order and keep you updated until your cover is ready for delivery. Lead times can vary depending on the time of year, anywhere from 3 weeks to 7 weeks.

UK delivery is typically available within 48 hours via a specialist carrier.

Download the Hot Tub Cover Order Form

How to Measure Your Hot Tub Cover

All measurements should be entered in centimetres (cm). Accurate measurements ensure a snug fit, improved insulation, and a professional finish.

• Strap Position – Select the locking strap position (A, B, C or D). If no straps are required, note this on the form.
• Cover Shape – Specify the overall shape, including rounded or cut corners.
• Parallel to Fold (Y) – Measure the hinge length. If measuring the spa shell, add 2cm to allow for correct overhang.
• Across Fold (X) – Measure across the hinge. Again, add 2cm if measuring directly from the spa.
• Corner Radius (Z) – Measure from the theoretical square corner to where the curve begins for an accurate radius.
• Cut Corner – If applicable, measure the length of the cut corner and record it as Z.
• Skirt Length – Measure from the underside of the cover to the bottom edge of the spa shell.
• Strap Length – Measure from the underside of the cover to the top of the cabinet lock.
• Strap Inset – Measure from the corner reference point to the start of the strap.
• Foam Thickness – Choose from Storm, Blizzard, or Avalanche grades.
• Colour Selection – Select your preferred vinyl colour.
• Additional Extras – Optional handles, extra straps, gazebo handles, or protective cover caps are available on request.
• Special Shapes – For unusual spa shapes, include a drawing with your order and contact us for assistance.